200 Sets of Motorized UPVC Butterfly Valves with battery Reset for a U.S. Aquaculture Facility

Market Background

The North American aquaculture industry is rapidly shifting toward automation and intelligent control. Recirculating Aquaculture Systems (RAS) demand continuous operation for aeration, water flow, and water quality management. In such applications, valves serve as critical end devices that must not only resist seawater corrosion but also provide fail-safe mechanisms during power interruptions to prevent water loss or stock mortality. The U.S. market places particular emphasis on reliability, ease of maintenance, and technical specifications such as response time, ingress protection, and manual override capability.

Customer and Application Scenario

The customer is a large-scale aquaculture farm in the United States operating multiple indoor RAS tanks for high-value fish species. Their existing valve system relied on manual operation, which led to delayed responses and could not be integrated with a central PLC control system. The customer required 200 sets of Motorized UPVC butterfly valve.pdf to upgrade their water recirculation piping. The key requirement was fail-safe functionality—spring-return actuators (fail close) to ensure automatic valve closure upon power loss, preventing backflow or overflow.

Our Solution

Based on the customer’s requirements for corrosion resistance, control integration, fail-safe operation, and harsh-environment durability, we provided the following configuration:

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• Body and Flow Path Materials: UPVC body with 304 stainless steel disc. The UPVC body offers excellent resistance to seawater and chemicals, while the 304 stainless steel disc provides corrosion resistance and withstands minor abrasion from suspended solids.

• Actuator Type: Spring-return (fail close) electric actuator, 24VDC power supply. The spring-return mechanism ensures automatic closure when power is interrupted, requiring no external control signal.

• Torque and Cycle Time: Actuator output torque ≥150 N·m, sufficient for reliable operation of DN150 butterfly valves under maximum differential pressure. Opening time ≤30 seconds, matching PLC control cycle requirements.

• Ingress Protection: IP67 rating, suitable for periodic washdowns, high humidity, and condensation typical in aquaculture environments.

• Control and Maintenance Interface: Supports timer and PLC programming for automated open/close control. A manual override is included for on-site maintenance operations.Electric Actuator Instruction.pdf

Key technical parameters of the solution are summarized below:

Customer Feedback

After project delivery, the customer’s technical manager provided the following feedback:

“The valves were installed smoothly and communicated stably with our existing PLC system. What impressed us most was the fail-safe test—all actuators completed spring-return closure within 2 seconds without any sticking. The IP67 rating performed well under daily washdown conditions, with no water ingress into actuators or stem corrosion observed.”

Summary

This case study illustrates how precise configuration of motorized UPVC butterfly valves—particularly the combination of fail-close actuators and high ingress protection—addresses critical concerns in North American aquaculture automation: power failure safety, environmental durability, and system integration. Based on technical data from the product PDF, including seal test pressure, shell strength, and material selection, this solution offers verifiable corrosion resistance, operational reliability, and long-term maintenance benefits—well suited for applications demanding continuous operation and fail-safe performance.